Low Cost Automation Tutorial

#119 Production Technology Improvement Course for Mechanical Designers - 3: Key Considerations for Part Design for Insertion Assembly - 2

Category : Automation elements technology

July 6, 2012

This tutorial provides examples of the key automation design considerations for low-cost automation of insertion assembly.

(1) Key automation design considerations for insertion assembly

1. Relationship between part chamfering dimensions and required locating accuracy

The relationship between the required locating accuracy of automated equipment and the chamfering dimensions of the two insertion assembly parts is shown in Fig. 1. When designing low-cost automation, locating accuracy must be within the limits given by this equation.

Fig. 1: Relationship between part chamfering dimensions and required locating accuracy

2. Overall locating accuracy

- Refer to the basic principles of locating technology that are explained in the series of technical tutorials starting from No. 97.
- Overall locating accuracy is the sum total accuracy of the various types of locating accuracy.

Overall locating accuracy = Accuracy of part datum planes + Jig locating datum plane accuracy + Assembly equipment locating accuracy

- The overall accuracy of multiple accuracies can be calculated by obtaining the square root of the sum of each accuracy's square.

(Overall locating accuracy)2 = (Accuracy of part datum planes)2 + (Jig locating accuracy)2 + (Assembly equipment locating accuracy)2

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